BandgapEngineering
Bandgap engineering is the design and manipulation of a material's electronic bandgap to tailor its optical and electronic properties for specific applications. It is central to semiconductor physics and optoelectronics because the bandgap sets absorption and emission wavelengths, carrier confinement, and device efficiency.
The main strategies are alloying, quantum confinement, strain, and heterostructuring. Alloying changes the bandgap by mixing
Applications span light-emitting diodes, laser diodes, photodetectors, solar cells, and high-speed electronics. In solar cells and